Temporary binder



PATENTE-D- FEB. 16. 1904.

M. P. JACKSON.

TEMPORARY BINDER.

APPLICATION FILED SEPT. 2, 1903.

I0 MODEL. 2 SHEETS-SHEET l.

M. P. JACKSON.

TEMPORARY BINDER.

APPLICATION FILED SEPT. 2, 1903.

PATENTED FEB. 16, 1904.

2 SHEETS-SHEET 2.

N0 MODEL.

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Patented February 16, 1904.

UNITED STATES PATENT OFFICE.

MARK PIERRE JACKSON, OF NEWTON CENTER, MASSACHUSETTS.

TEMPORARY BINDER.

SPECIFICATION forming part of Letters Patent No. 752,559, dated February16, 1904. Application filed September 2,1903. swarm. 171,670. on model-lTo all whom it may concern:

Be it known that I, MARK PIERRE J AOKSON, of Newton Center, in thecounty of Middlesex following is a full, clear, and exact descriptionthereof, reference being had to the accompany ing drawings, which formpart of this specification.

The present lnventlon is an lmprovement in temporary binders forsecuring detached leaves in book form, and is in particular animprovement upon the binder shown and deto the backing-pieces A B insuch manner that scribed in Letters Patent No. 7 35,87 9, issued to methe 11th day of August, 1903.

The object of the present invention is to provide a binder which willremain securely closed, to provide a simple device therefor by which itis positively locked when closed, and in particular to improve myaforesaid patented binder by doing away with, the sliding connectionbetween the spring and hinge-back of binder and by providing a positivebut removable look for such binder.

The invention consists in the novel constructions and combinations ofparts hereinafter described and claimed, and the accompanying drawingsillustrate various but not all constructions embodying my invention.

In said drawings, Figure 1 is an inner face view of the preferred formof binder with the locking device in place.

are similar sectional views illustrating modifications in relativeshapes and sizes of the Fig. 2 is an enlarged section on line 2 2, Fig.l, and showing indotted lines the position of parts when lock is re-,

moved and binder opened. Figs. 3, 4:, and 5 tion and will hold the edgesof leaves or sheets inserted between the pieces A B; a indicated in thedrawings. To the inner opposed faces of said backing-pieces are attachedimpalingposts or filing-fingers D, which may be of any desired kind andarranged in any desired way, provided they will hold and retain thesheets in place when the binder is closed thereon.

As shown, the fingers are of the telescoping variety and curved on arcs.concentric with the hinge C; but I do not restrict myself to thespecific construction of leaf-retaining devices shown.

A spring is arranged between and connected l it will hold the binderclosed,preventing leaves escaping from the filing-fingers, as shown infull lines in the drawings. This spring may be formed of wire, as shownat E in Figs. 1 and 2 of the drawings, this spring being substantiallylike that shown in my said patent, butis permanently attached at itsbend c to the backing-pieces A instead of being loosely attachedthereto, as in my said patent. In the present instance this spring isonly intended to perform the function of closing the binder, andtherefore it may be a simple bowspring, as at E, Fig. 3, having its endssecured to the pieces A and B near their bends,

and one or more such springs can be used, as

desired. Figs. 4: and 5 show how shorter bowsprings may be used for samepurpose. All these springs serve the same functionto wit, to close andhold closed the binderand are put under tension when the binder is open.

In Fig. 3 the backing-pieces A B are so formed that when closed the backof the binder will be bulged outwardly or convex in crosssection.

In Fig. 4 the backing pieces A B are straight in cross-section, thefiling-fingers beingmade longer and of greater curvature than in Fig. 2.

In Fig. 5 the backing-pieces A B are slightly curved in cross-section,which reduces the curvature of the fingers D.

In those constructions where the back when closed is bowed outwardly-asin Figs. 3 and 5, for instance-the springs are contractile. Inconstructions where the back is straight when closed, as in Figs. 4 and8, the springs may be expansive, either expansive or contractile springsbeing within the scope of my invention, and in any case the springsshould be such as will perform the principal function of holding thefiling-fingers in closed position.

In each of the Various forms of binders shown it will be noted that whenthe binder is closed the spring is bowed away from the hinge of thebacking-pieces and when the binder is opened the spring is broughtagainst the hinge of the backing-pieces, as indicated in dotted lines inFig. 2. In order to efiectually lock the binder when closed and preventits casual or forcible opening, I employ a simple but efiective lockingdevice, consisting of a rod or bar E which is of such cross-section asto fit closely between the spring and the backing-pieces when the binderis closed, as

indicated in the drawings, and which by preventing the hinge approachingthe spring effectually and positively locks the binder in closedposition until the block is removed. This locking-block may be in theform of a bar long enough to reach from one end of the binder to theother, at least to and beyond the springs, so that it can be slippedinto the binder and through the spring after the binder is closed. Thelocking device should fit sufficiently tightly to prevent its casualdisplacement or dropping out of place while the binder is beingtransported in closed position, but may be readily grasped by thumb andfingers and withdrawn when it is desired to open the binder. It will beseen from the drawings that the cross-section of the locking device mayVary with the form of the opening inclosed between the spring andbacking-pieces when the binder is closed. In the locking device shown inFigs. 6 and 7 the wire G is fastened near or at the hinge C and may beused as the pivot of the hinge. At one extremity this wire is bent inconvenient form, as at g, to form a crank by which the wire may beturned. At another place or other places along the center, opposite thespring or springs E,this wire is bent in a U shape, as at g, so thatwhen the wire is turned down by the use of crank g the projected portionof the wire at 9 will come against the adjustingspring E and hold it inthe closed position, as shown in Figs. 6 and 8. When the loop orU-shaped projection g of the wire is thrown back against thebacking-piece, as in Fig. 7

the binder can be readily opened, as when the rod F is removed in thepreferred locking device. It will also be noted that the particular kindof spring employed and the particular form of the binding-pieces are notessentials of the invention, it residing more particularly in theemployment of a locking device between the spring and backing-pieceswhen the binder is closed to prevent the opening of the binder until thelocking device is moved out of the way.

Having thus described my invention, what I therefore claim as new, anddesire to secure by Letters Patent thereon, is-' 1. In a temporarybinder, opposite longitudinally-hinged backing-pieces provided withfiling-fingers, and a spring attached at its opposite ends to the saidbacking-pieces, on the inner sides thereof, and adapted to close thebinder; with a locking device adapted to be adjusted between the springand backingpieces when the binder is closed, to prevent opening of thebinder, substantially as described.

2. In a temporary binder, the combination of a pair of backing-pieceshinged together longitudinally, filing devices attached to said piecesand a spring attached to the opposite backing-pieces on the inner sidesthereof, extending across the hinge, and adapted to close the binder;with a locking device adapted to be adjusted between the spring andbackingpieces when the binder is closed, to prevent opening of thebinder, substantially as described.

3. In a temporary binder, the combination of a pair of backing-pieceshinged together longitudinally, a bowed spring attached at opposite endsto the opposite backing-pieces and extending across the hinge; andsheet-filing devices attached to the respective backingpieces; with aremovable locking-bar adapted to be inserted between the spring andbacking-pieces when the binder is closed, to prevent opening of binder,substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

MARK PIERRE JACKSON.

In presence of ALLAN SWEET, O. E. STANTON, Jr.

